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Mxr distortion+ help!

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  • #16
    actually the red wire doesnt go straight to the curcuit bord but to what looks like a diode attached inside where the AC jack is. the black wire goes to the inside where the input jack is. I read good voltage where those wires start but no reading at the other end of the wires. are the wires shot?

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    • #17
      if i hold one end of the vfoltage tester on one end of the red wire and the other on the other end I get a full voltage reading. when I hold the tester on both ends of the black wire I get no reading whatsoever

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      • #18
        I Think I found the problem. forget about my last 2 posts. The red wire connects to a clear diode-like thing. on the in side of the diode I get full electricity, on the other side there is nothing. what is the importance of this component? do I need to replace it or can I just snip it off and solder the wires together?

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        • #19
          It's probably a series diode to protect the pedal from a reverse battery or PSU.
          Replace it with a similar one.
          Juan Manuel Fahey

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          • #20
            Short across the glass diode with needle nose pliers for a moment and see if the pedal turns on, the LM741 may still be bad.

            After looking back at post #12 where you were getting .3-.6V, and it seems that the series diode is where that voltage is coming from. A shorted 741 chip is leaving nothing but the diode drop to measure.
            Last edited by guitician; 09-16-2011, 04:08 PM.
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